need help on reading the output of "uname" with respect to SMPenabled Linux
On 21 Jan 2006 10:30:38 -0800, AN O'Nymous staggered into the Black Sun and said: Damned if I know. All my machines...
On 21 Jan 2006 23:00:46 -0800, AN O'Nymous staggered into the Black Sun and said: Actually, this...
1. What does the "#1" mean in the uname output? Does that mean 1 physical processor? 2. If so, why would one install a SMP kernel on a machine with only 1 processor? So that hyperthreading would work? Does hyperthreading require the installation of an SMP kernel? 3. I readproc-cpuinfo in cases (2) and (3). Both report the existence of processor 0 and processor 1, but in the "physical id" field, both are 0. Does this "physical id" refer to physical processor id? So, does this mean processors 0 and 1 are just virtual processors due to hyperthreading? 4. The output of dmesg in case (3) has these: LAPIC (acpiid0x0000 id0x0 enabled1) CPU 0 (0x0000) enabledProcessor #0 Pentium 4(tm) XEON(tm) APIC version 16 LAPIC (acpiid0x0001 id0x1 enabled1) CPU 1 (0x0100) enabledProcessor #1 Pentium 4(tm) XEON(tm) APIC version 16 2 CPUs total Intel MultiProcessor Specification v1.4 Processors: 2 Initializing CPU#0 CPU: Trace cache: 12K uops, L1 D cache: 8K CPU: L2 cache: 512K CPU: Physical Processor ID: 0 CPU: Trace cache: 12K uops, L1 D cache: 8K CPU: L2 cache: 512K CPU: Physical Processor ID: 0 CPU0: Intel(R) Pentium(R) 4 CPU 3.00GHz stepping 09 Initializing CPU#1 CPU: Trace cache: 12K uops, L1 D cache: 8K CPU: L2 cache: 512K CPU: Physical Processor ID: 0 CPU1: Intel(R) Pentium(R) 4 CPU 3.00GHz stepping 09 Total of 2 processors activated (11953.76 BogoMIPS). cpusiblingmap0 = 1 cpusiblingmap1 = 0 cpu: 0, clocks: 1996582, slice: 665527 cpu: 1, clocks: 1996582, slice: 665527 smpnumcpus: 2. How many physical processors on earth do I have?
Temporarily enablingdisabling a sound card in SuSE 9.3 208
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